https://www.powtech.de/en/ausstellerprodukte/powtec23/product-10327326/cold-grinding-equipment-for-product-and-mill-cooling

Paddle Screw Cooler
In the paddle screw cooler, granules or powders are cooled down to -196°C by liquid nitrogen. This cooler type is normally used for cold grinding processes. Here, tough, elastic or temperature sensitive materials such as thermoplastics, elastomers, spices, pharmaceutical products or waxes can be cooled. Coolers are available with capacities from about 50 to 3000 kg per hour.

Cryogenic Control Valve Unit for Liquid Nitrogen
In a cryogenic control valve unit, the dosage of liquid nitrogen is regulated in accordance with a 4-20 mA signal. A control valve is mounted on a stainless steel frame, together with safety valves, manometers, a dirt trap and an evaporator coil for captive medium supply. If required, it can also be supplied with a solenoid or membrane valve as an open/close valve. The unit is also available in a stainless steel cabinet with a viewing window.

PID Controller
PID controllers are required for the control of a cold grinding plant. They supply the output signal needed for the control valve unit. The regulators are preset for direct use.

Messer is the world's largest privately held specialist for industrial, medical and specialty gases. Messer's Gases for Life are used in industry, environmental protection, medicine, the food industry, welding and cutting technology, 3D printing, construction, research and science. As a global player, Messer offers its sustainable products and services in Europe, Asia and America. More than 10,000 employees work together successfully with a focus on diversity and mutual respect.

In most industrial processes, gases are just as important as water and electricity and play a major role in their decarbonization – through the use of green hydrogen, for example. Messer offers one of the largest product portfolios in the market and develops and optimizes application technologies for gases in state-of-the-art competence centers.

As a pharmaceutical company, Messer supplies medical and pharmaceutical gases and turnkey solutions and has a proven track record as a reliable provider of vital products – in pandemic situations, for example.

Founded in 1898, the company’s headquarters are located in Bad Soden, near Frankfurt, Germany.

In 2022, Messer generated an expected consolidated sales of 4.164 billion* euros.

* Sum of Messer Group and Messer Industries, which includes 100 percent of the at-equity holding Messer Industries.